Officials at Specialty Surgicare in Las Vegas reported the error to the state Bureau of Licensure and Certification on Dec. 18, after a manufacturer discovered the problematic setting on the machines.

Officials said the machines were set to disinfect for one minute, and should have been set for five minutes. They say the settings were immediately changed.

The state is investigating whether the surgery center violated infection control policies. they say there is minimal risk for patients to get an infectious disease because of the bad cleanings, because the scopes are cleaned before going into the machine.